Effect of HDPE Based Wastes on the Performance of Modified Asphalt Mixtures

AbstractFlexible asphalt pavement construction is an expensive investment. Nowadays, many methods are being investigated to improve the performance of asphalt mixtures. For this reason, bitumen is usually used with modified form in hot mix asphalt (HMA) in practice. The use of recycled waste materials as modifier additives on bitumen could have several economic and environmental benefits. The main aim of this research was to investigate the effect of HDPE (High density Polyethylene) based plastic waste materials on the performance of asphalt mixtures. For this purpose, HDPE based waste materials were added to the bitumen as modifier in to amount of 1%, 2%, 3%, 4%, then asphalt mixtures formed by the modified bitumen were tested for the determine their performances. The performance of specimens was firstly measured by stability, flow values. Then, susceptibility characteristics of the HMA to water damage were determined by using Indirect Tensile Test (ITT) method described in AASHTO T283 with classically compacted specimens. The results showed that, the best performance was obtained with a content 4% in terms of stability values. In addition, all specimens were showed resistance to water damage